(19)

(11)

EP 2 318 803 A1

(12)

(43) Date of publication: 11.05.2011 Bulletin 2011/19 (21) Application number: 09785455.8 (22) Date of filing: 06.08.2009

(51) International Patent Classification (IPC):  F42C 13/02(2006.01) G01S 17/02(2006.01) G01S 7/481(2006.01) (86) International application number: PCT/GB2009/050985 (87) International publication number: WO 2010/015860 (11.02.2010 Gazette 2010/06)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR Designated Extension States: AL BA RS (30) Priority: 08.08.2008 GB 0814503 12.03.2009 EP 09275015 (71) Applicant: MBDA UK Limited Stevenage Hertfordshire SG1 2DA (GB)	(72) Inventors: JENNINGS, Martyn, Robert Bristol BS34 7QW (GB) MILLER, Lee, Douglas Bristol BS34 7QW (GB) (74) Representative: McBrien, Matthew Nicholas  BAE Systems plc Group IP Department Warwick House, P.O. Box 87 Farnborough Aerospace Centre GB-Farnborough, Hampshire GU14 6YU GB-Farnborough, Hampshire GU14 6YU (GB)